// Blinking LED on GPIO 2

void setup() {
  pinMode(2, OUTPUT);  // Set GPIO 2 as output (usually built-in LED)
}

void loop() {
  digitalWrite(2, HIGH);  // Turn LED ON
  delay(500);             // Wait 500 ms
  digitalWrite(2, LOW);   // Turn LED OFF
  delay(500);             // Wait 500 ms
}